1. Birkhoff, G. 1967. Lattice Theory, (3rd ed.), Providencs: A.M.S. Colloq. Publ.
2. Buekenhout, F. 1979. Diagrams for geometries and groups. J. Combin. Theory Ser. A, 27: 121?151.
3. Buekenhout, F., Delandtsheer, A. and Doyen, J. 1988. Finite linear spaces with flag-transitive groups. J. Combin. Theory Ser. A, 49:268?293.
4. Buekenhout, F., Delandtsheer, A., Doyen, J., Kleidman, P., Liebeck, M., and Saxl J. 1990. Linear spaces with flag-transitive automorphism groups. Geom. Dedicata 36:89?94.
5. Delandtsheer, A. (forthcoming). Finite (line, plane)-flag transitive planar spaces.